More than 500 children have died in an outbreak that the world is virtually ignoring
vaccine, it may be [less effective](https://www.sciencedirect.com/science/article/abs/pii/S0264410X24012465?via%3Dihub). Malnutrition and undernutrition is one reason this outbreak has hit Bangladesh hard. It has contributed to the number of severe cases in Bangladesh being higher than